Scraper



April 19,1927. 1,625,382

' W. W. WELCH l I SCRAPER Filed March 1'1. 192e 5 sheets-Sheet 1 qf/QLL 15 25 @Y L' A s 15 /I' A l 44 v L J b 5 l j/ g Cim@ In/uente@ Apnl 19, 1927. W w WELCH I 1,625,382

SCRAPER Filed March ll, 1926 5 Sheets-Sheet z Meh QED if G 9 n And 19 1927' w. w. WELCH SCRAPER Filed March l1 1926 5 Sheets-Sheet 3 W. 24K We da (g1/Londo@ Patented Apr. 19, 1927.

WILLIAM W. WELCH, 0F LIVER-MGRE, CALIFORNIA.

SCRAPER.

Application filed March 11, 1926. Serial No. 94,017.

This invention relates to scrapers and especially adapted for grading highways and the like.

The principal object oli the invention is to provide a device of this character having a scoop l'or cutting, leveling and retaining the dirt and means to operate the scoop for dumping the load.

Another object of this invention is the provision of means for retaining the scoop in three diiiierent positions.

Other' objects ot the invention will appear as the disclosure progresses. rlhe drawings are intended merely to indicate a possible embodiment of the invention. It is obvious that the actual needs of manufacture may necessitate certain mechanical changes. It is theretore not intended to limit the invention to the embodiment illustrated but rather to deiine such limits in the appended claims.

For a more detailed understanding of the invention, attention is now called to the drawings in which a preferred embodiment is shown illustrated.. In these drawings like parts are designated by like reference characters in all the views.

Fig. 1 is a side view ot the scraper.

Fig. 2 is a top view thereof.

Fig. 3 is a section on line 3-3 ot Fig. 2 showing the scoop in a cutting position.

Fig. 4 is a. similar view as Fig. 3 with the scoop shown in a dumping position.

Fig. 5 is a section on line 5 5 of Fig. 2.

Fig. 6 is a section on line 6 6 of Fig. 1.

Figs. 7 and 8 are details.

Referring now to the drawings in detail in which like reference characters denote like parts throughout the specilication, numeral Yl designates the t'rame, 2 the wheels and 3 the axle. Attached to the 'trame are a pair ot' guides 4 having slots 5 therein. Adapted to move between the guides is a scoop 6 supported on a har 7 which moves in the slots 5.

Numeral 8 represents a pair of lower catches havingrtwo grooves 8a and 8" for the reception or the bar 7 and numeral 9 designates an upper catch having a groove 10 for the bar 7 to tit into. See Figs. 7 and 8.

At the sides of the scoop and adapted to support same are upper and lower bars 11 and 12. The lower bar is pivoted to the lower part of the scoop and the axle 3 and the upper bar is pivoted to the upper part of the scoop at one end and the other end to a forked element 13 (see Figs. 5 and G).

1 Fastencd to the upper and lower cross cars 14 and 15 are arms 16 and 17 connected together by a rigid link 18. A spring 19 is provided to normally urge the linkdownward.

es noted in Figs. 1 and 6,keyed to the axle 3 1s al ratchet 2O co-opcrating with a pawl 21 and urged in contact with each other by a spring 22. In Fig. 5 Vis shown yanother ratchet 23 keyed to the shaft 3 and adapted to revolve between the forked elements 13. Fivotedto this element is a pawl 24 normally urged out of engagement with the ratchet 23 by the spring 25.

rI he load carrying position ot the scoop is shown 1n Fig. 1. For cutting and scraping the dirt the scoop is raised inthe position shown in Fig. 3 by the following means. It will be seen in Fig. 5 that when the cord 27 is pulled by the operator the pawls 24 will engage the ratchets 23. As the ratchets are keyed to the axle 3 the clockwise movement of the axle and the ratchets will partly re` volve the forked elements 13, pull the bars 11 and raise the scoop supporting bars 7 upward from their former resting place in the grooves 8a of the lower catches 8 to the new resting place 8b o1'r` the catches 8. When the scoop has reached the desired position the cord 27 is released.

For dumping the load the cord 27 is pulled again and the scoop supporting bar 7 will rise by the aid of the means heretofore described through an arc and be guided by the slots 5 until the bar 7 will automatically catch in the grooves 10 ot the upper catches 9 and be kept there until released. As soon as the bar is properly supported the cord 7 is released. The dumping position of the scoop is shown in Fig. 4.

For releasing the scoop supporting bar from any of its set positions the cord 28 is pulled by the operator. This will cause the bar V14 to revolve clockwise and as the catches 9 are keyed to the bar they will be raised and allow the scoop supporting bar to slide downward.

In the event that it is desired to allow the scoop to move .down to its lowest position as shown in Fig. 1 when the scoop is set in the position shown in Fig. 3 the ccrd 28 is pulled, and as the arm 17 is connected to the arm 16 by the link 18 the arm 17 will swing the lower catch 18 on its pivoting bar as shown in Fig. 4 and allow the scoop to fall downward.

The ratehet. is keyed to the axle and revolves with same. The axle is adapted to revolve ith the Wheel when going torwird and be stationary when moving' backward. rIlle mechanism to bring about this resnit consists ot the ratchet 20 which keyed to the axle, a pawl 2l and a spring` 22.

Having thus described the invention what l. desire to secure by United States Letters Patent is:

i. In a device et the class deseribed in combination, a frame an axle, a pair of wheels: guides attached to the. said frames, slots in the said lguides, a cross bar adapted to more in the .said slots, a scoop supported by the said Cross bar, an upper (fateli, a lower Vawh. interna tel' releasing; the said Catches, a ratchet keyed to the said axle on the outer side, oit the said wheels. a patri and spring attached to the said Wheels, the said ratchet and pawl adapted to (temperate tor turning the axle when the said wheels move forward,

another ratchet, and pand, the last mentioned ratchet and panl adapted to eo-operate tor raising and partly turning the scoop.

2. ln a device ot the class described in Cornbination, a scoop, the said scoop adapted to swing on a cross bar, the said eross bar movable in a pair oi slots ot a pair of guides, latches at the upper and lower ends ot said slots, an axle, a lower bar pivoted to the said axle and lower part oi said scoop, an upper bar having' one end pvoted to the upper part of said scoop and the other end pivoted te a forked element, the said forked elei'nent beingl loosely mounted on the said axle, a. ratchet keyed to the said axle between the said 'forked element 7 a paw] adapted to engage the said ratchet, the said scoop adapted to be raised and partly turned when the said ratchet and pawl L10-operate.

In testimony whereof I attira my signature.

VILLIAM W VELG/H. 

